HEIDENHAIN iTNC 530 (340 49x-02) ISO programming - Manual (Page 267)

HEIDENHAIN iTNC 530 267
8.1 W
or
k
ing with Cy
cles
Working with the secondary axes U/V/W
The TNC performs infeed movements in the axis that was defined in
the TOOL CALL block as the spindle axis. It performs movements in
the working plane only in the principal axes X, Y or Z. Exceptions:
„ You program secondary axes for the side lengths in cycles G74
SLOT MILLING and G75/G76 POCKET MILLING.
„ You program secondary axes in the contour geometry subprogram
of an SL cycle.
„ In Cycles G77/G78 (CIRCULAR POCKET), G251 (RECTANGULAR
POCKET), G252 (CIRCULAR POCKET),G253 (SLOT) and G254
(CIRCULAR SLOT), the TNC machines the cycle in the axis that you
programmed in the last positioning block before the cycle call. When
tool axis Z is active, the following combinations are permissible:
„ X/Y
„ X/V
„ U/Y
„ U/V